SOLUTION: Coach ran 4 km in 30 minutes. He ran the
first 2 km at a constant speed that was twice
the constant speed at which he ran the last 2 km.
Coach ran the 3rd km at a speed of ? km
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Question 413255: Coach ran 4 km in 30 minutes. He ran the
first 2 km at a constant speed that was twice
the constant speed at which he ran the last 2 km.
Coach ran the 3rd km at a speed of ? km/hr.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
1st 2 km:
(1)
2nd 2 km:
(2)
(3) hr
---------------------
(3)
and
(1)
and
(2)
(2)
(2)
(2)
(2)
and
km/hr
Coach ran the 3rd km at 6 km/hr
check answer:
(1)
(1)
(1)
(3)
(3)
(3)
hr
OK
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